将DataTable 数据插入 SQL SERVER 数据库

以下提供3中方式将DataTable中的数据插入到SQL SERVER 数据库：

一：使用sqlcommand.executenonquery()方法插入

foreach (DataRow datarow in datatable.Rows)

{

string sql = "INSERT INTO [Table_1]

([CompanyName],[CompanyCode],[Address],[Owner],[Memo])" +

"VALUES('" + datarow["CompanyName"].ToString() + "'" +

",'" + datarow["CompanyCode"].ToString() + "'" +

",'" + datarow["Address"].ToString() + "'" +

",'" + datarow["Owner"].ToString() + "'" +

",'" + datarow["Memo"].ToString() + "')";

using (SqlConnection sqlconn = new SqlConnection(connectionString))

{

sqlconn.Open();

SqlCommand sqlcommand = new SqlCommand(sql, sqlconn);

sqlcommand.ExecuteNonQuery();

sqlconn.Close();

}

}

二：使用sqldataadapter.update(dataset,tablename);

SqlCommand insertcommand = new SqlCommand("INSERT INTO [Table_1]([CompanyName],[CompanyCode],[Address],[Owner],[Memo])" +

"VALUES(@CompanyName, @CompanyCode,@Address,@Owner,@Memo)",new SqlConnection(connectionString));

insertcommand.Parameters.Add("@CompanyName", SqlDbType.NChar, 50, "CompanyName");

insertcommand.Parameters.Add("@CompanyCode", SqlDbType.NChar, 25, "CompanyCode");

insertcommand.Parameters.Add("@Address", SqlDbType.NChar, 255, "Address");

insertcommand.Parameters.Add("@Owner", SqlDbType.NChar, 25, "Owner");

insertcommand.Parameters.Add("@Memo", SqlDbType.NChar, 255, "Memo");

sqldataadapter.InsertCommand = insertcommand;

sqldataadapter.Update(dataset, "Table_1");

三：使用sqlbulkcopy.writetoserver(datatable)

SqlBulkCopy sqlbulkcopy = new SqlBulkCopy(connectionString, SqlBulkCopyOptions.UseInternalTransaction);

sqlbulkcopy.DestinationTableName = "Table_1";//数据库中的表名

sqlbulkcopy.WriteToServer(dataset.Tables[0]);